CVE-2026-25134 Group-Office Argument Injection in MaintenanceController::actionZipLanguage
Attackers can achieve remote code execution in Group-Office by injecting arguments into a system zip command via the lang parameter.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-25134?
CVE-2026-25134 is a critical command injection vulnerability in Intermesh groupoffice, published on 2 Feb 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Group-Office is an enterprise customer relationship management and groupware tool. Prior to 6.8.150, 25.0.82, and 26.0.5, the MaintenanceController exposes an action zipLanguage which takes a lang parameter and passes it directly to a system zip command via exec(). This can be combined with uploading a crafted zip file to achieve remote code execution. This vulnerability is fixed in 6.8.150, 25.0.82, and 26.0.5.
Weakness: CWE-88
Which versions are affected by CVE-2026-25134?
It affects 1 product.
Products include Group-Office Group Office.
How do I fix CVE-2026-25134?
No fix has been published for CVE-2026-25134 yet. Limit exposure of the affected software until one is available.
Upgrade, and pass arguments to programs as a list instead of through a shell. More about Command injection.
Is CVE-2026-25134 being exploited?
There is no known exploitation of CVE-2026-25134 in the wild and no public exploit code.
Other vulnerabilities in Intermesh groupoffice
- CVE-2026-25512 Group-Office is vulnerable to RCE due to Command Injection via TNEF Attachment Handler
- CVE-2025-63406 Code injection in n/a
- CVE-2026-25511 Group-Office is vulnerable to SSRF and File Read in WOPI service discovery
- CVE-2023-46730 Server-Side Request Forgery in groupoffice
- CVE-2025-25191 Group-Office has a Stored XSS Vulnerability via user's name field
Sources
Also known as GHSA-v39j-549w-8849.